DNS - Cannot access hostname

Can you help please? After returning home from office and connecting to my wifi I cannot access any page from my work hostname - cpas.cz. Ping to IP address is working as you can see below.

➜ ping cpas.cz
ping: cannot resolve cpas.cz: Unknown host

➜ ping 88.103.215.205
PING 88.103.215.205 (88.103.215.205): 56 data bytes
64 bytes from 88.103.215.205: icmp_seq=0 ttl=245 time=13.297 ms
64 bytes from 88.103.215.205: icmp_seq=1 ttl=245 time=21.516 ms

➜ nslookup cpas.cz
Server:     192.168.1.1
Address:    192.168.1.1#53

Non-authoritative answer:
Name:   cpas.cz
Address: 88.103.215.205

➜ cat /etc/resolv.conf
search dkm.cz
nameserver 192.168.1.1

I tried the following solutions but without effect:

• https://gist.github.com/mipmip/1844353
• https://mackeeper.com/blog/flush-dns-cache-on-mac/